Crystals quartz.
Quartz lumps.
Quartz lump.
Quartz.
Quartz lumps.
Quartz lumps.
Pure white silica quartz.
Quartz lumps.
Zanet quartz.
Quartz.
Quartz.
Quartz powder.
Quartz lumps.
Quartz.
Quartz.
Quartz.
Quartz.
Quartz grits, milky quartz (in lumps).